Latest Customer Reviews

Flowmaster Universal Catalytic Converters - 49-State Legal Reviews

Great replacement for stock cats. Noticed significant increase in power and good sound with Flowmaster muffler . No problem with codes from o2 sensors with new parts. A lot less expensive then stock factory parts.

Flowmaster Super 10 Series Mufflers Reviews

I have the 5.3 Silverado with magnaflow cats and 3 in piping. I have it dumped before the axle. 20 Inches of piping after the muffler with a turndown..sounds amazing especially cold start. Very deep and very mean